Superheater boiler



Jan. 3, 1928. 1,654,533

A. COTTON SUPERHEATER BOILER Filed March 12. 1923 2 Sheets-Sheet 1 INVENTOR ALFRED Co'r'roN BY WATTORNEY f without yshuttin Patented dan. 3, 1928.

UNITED STATES rassen Param orifice.

ALFRED COTTON, Oli ST. LOUIS, MISSOURI, ASSIGNOR TO KEINE BOILER COMPANY, OF ST. LOUIS. MISSOURI, A CORPORATION 0F MISSOURI SUPERHEATER IBOILER.

Application Bled March 12, 1923. Serial No. 624,470.

rlhis invention relates .to water tube boilers of the-kind that are equipped with water tubes arranged horizontally or substantially so, and a radiant heat silber-heater.

The .object of my invention is to provide a water ytube boiler of the general type reierred to that isl exceptionally eliicientand which is constructed in such a manner that the'superhcater can be' cleaned quickly and easilywithout shuttingdown the boiler. y

To this end I havel devised a boiler that comprises water tubes. arranged 'in a h oriaontal or substantially horizontal pos1t1on, preferably inclined upwardly and rearwardly from the front wall of the boiler setting, a furnace under said tubes, ayradiant heat superheater at the rear end of the furnace varranged in a rearwardly and upwardly inclined position so as to cause the heat from same-to be thrownupwardly and forwardly towardsthewater tubes,y and clean-out open'- ings inth.` rear wall of the boiler setting at the upper end of the superheater, through which a cleaning tool can be introduced down fthe boiler, so as to remove dustran soot which collects on the superheater. y l

Figurey l ofthe drawings is a vertical longitudinal sectional view of a superheater boiler constructed in accordance with my presentinvention.

Figure 2 is a detail sectional view of one of the clean-'out openings, showing the door :for said opening 1n its open position and in its closed position. t

Figure 3 illustrates a cleanin tool that can be used, .for removing soot an dust from the superheater. y

Figure i is a transverse sectional view of a portion of the superheater, illustrating how the cleaning tool is used; and p Figure 5`is an elevational view of several of the clean-out doors and the frames on which they are mounted. i

Referring to the drawings which illustrate the preferred form of my invention, Ardes# ignates thewater tubes of the boiler which may be arranged in a horizontal or slightly inclined position, B desi nates the rear water le s on headers, C designates af-urnace arranged under said water tubes and D designates a'san entirety a superheater of the radiant heat type that is arranged atjthe rear end of the furnace C in a rearwardly and upwardly-inclined position, so aal to cause the heat from same tobe thrown u f wardly against thel tubes A. Owing to t e fact that the superheater D is arranged in an inclined position, considerable dust and soot collects on saine when the boiler is in operation, and in order that said dust and soot ina'y be removed easily andvwithout the necessity of cutting the boler out of service, I arrange clean-out openings E in the rear wall of the boiler settinG adjacent the upper 'end of the superheater i), so as to permit a cleaning tool F to be inserted through said clean-out openings andgrnoved longitudinally of the top surface ofthe superheater ,'to'

metal casings 2 being flat, as shown in Fig-v ure 4. The heat absorbing casings 2 that surround the superheater tubes, and the bricks 3 that are arranged between said casings, are carried by a supporting structure, designated as an entirety by the reference character G, which may be of any suitable form, and a metal housing' H is arranged in the rear wall of the boilersetting so as to cover the underside of the superheater D. As previv ously stated, cleanout openings E are provided so as to enable the cleaning tool F to be used for scraping` olf the soot anddust that collectson the top faces of the heat absorbin casings 210i the superheater that surroun the superheater ltubes 1. These clean-out openings Emare arranged below the lower ends of the rear water legs lor headers B so that the cleaning tool Fmay. be used without shutting down the boiler, and each of said clean-out openings` is provided with a door or cover'il that is normally closed, as shown in broken lines in Figure 2, 'but which is capableA of being moved into the position shown in full lines in Figures 2 and 5, when it is desired to use the cleaning tool.- The clean-out doors I may either be of the hinged type or any other preferred type, and

IOO

supporting means for said doors may either be formed by a single casting arranged transversely in the rear wall of the boiler setting, Y

or by individual castings I', as herein illustrated.

In a boiler of the construction above described access to the exposed surface of the superheater kthrough the clean-out openings E is very easy and convenient and the superheater can be ke t perfectly clean with. very little trouble While the boiler is in operation,

the clean-out openings being so ,arrangedy sign that it is necessary to shut down theboiler during the operation of removing dust and soot from the exposed surface of the su erheater.

aving thus described my invention, what I claim as new and desire to secure by Letters Patent is:

l. A superheater boiler provided with longitudinally-disposed water tubes, a furnace under said tubes, a superheater of the radiant heat type arranged at the rear of said furnace in a rearwardly and upwardly inclined position so that the heat from same will be thrown upwardly and forwardly against said water tubes, and clean-out openings in the rear wall of theboiler setting arranged at the upper end of said superheater sothat a cleaning tool can be inserted through same and moved over the exposed face of the superheater when the boiler is in operation.

` 2. A water tube boiler provided with Water tubes that are inclined rearwardly and upwardly away from the front wall of the boiler setting, a furnace under said tubes, a superheater at the rear end of said furnace comprising tubes that are inclined upwardly and rearwardly and heat absorbing elements combined with said tubes, and clean-out openings in the rear wall of the boiler setting arranged at the upper endof said superheater so as to enable a cleaning tool to be introduced through same and moved longitudinally over the top surfaces of said heat absorbing elements.

3. A water tube boiler provided with water tubes that are inclined rearwardly and upwardly with relation to the boiler setting, a furnace under said tubes, a superheater of the radiant heat type arranged at the rear end of the furnace in an upwardly and rearwardly inclined plane that passes below the rear water legs or headers of the boiler,

` clean-out openings in the rear wall of lthe boiler setting arranged at the upper end of the su erheater, movable doors or closures for said openings, and a metal housing arranged in the rear wall of the boiler setting so as to cover the underside of said superheater. 4

ALFRED COTTON. 

